|Image from Nina Paley's Blog post: Embroidermation: Tree of Life|
Embroidermation: Tree of Life from Nina Paley on Vimeo.
Then, they went on to create another, complete, animated short using this technique and based on a children's song from the Jewish passover. You can view this animation below and learn more about the technique on Theodore's blog: "Theodore Gray".
And if you read all the way to the end of his blog post, Nina and Theodore have released the embroidery files that they used to create the animation frames.